Feeding device for conveyers.



No. 733,988. v PATENTED JULY 21, 1903.

c. MITTAG. FEEDING DEVICE FOR GONVEYERS.

APPLICATION FILED DEC. 31, 1902.

N0 MODEL.

5- L4 IlllllllllUIlllIlIl 677 UNITE STATES Patented July 21, 1903.

CARL MIT'IAG, OF ST.

FEEDING DEVICE GEORGE, NEW YORK.

FOR CONVEYERS.

SPECIFICATION forming part of Letters Patent N 0. {733,988, dated July 21, 1903. Application filed December 31,1902. Serial No. 187,277. (No model.)

' for Conveyors, of which the following is a specification.

My present invention pertains to means for feeding substances to conveyors, and more especially relates to mechanism which may be moved to various positions relatively of bins or pockets and maybe operated to regulate and control the quantity'of substance supplied from said bins to a conveyor, which delivers said substance at a dump, where it may be received by cars, carts, or other suitable vehicles for distribution to different points.

For the purposes of this specification my invention is described and illustrated as operatively combined with a belt conveyor, commonly so called, which is used to convey dry substances, such as cement or other ma terial physically analogous therewith, from binsv to the distribi'lting point. Ordinarily screw conveyors are used for this purposoin combination with bins which flare upwardly and outwardly. At or near the lower part of the bins gates are located, preferably equidistant one from another, and each may be opened as required in order to permit the coment to pass from a bin to the conveyor. It frequently occurs, however, that only a sufficient quantity of cement passes through the gateway to form an arched cavityin the mass which is contained within the bin, the rem ai nder of the mass being, to use a trade term, hung up or maintaining for a time its former position around the cavity thusformed. Eventually, however, the mass falls, filling the cavity and also passing through the gateway in such a quantity as to completely clog the screw of the conveyor. It should be stated also that the supply of cement to the.

conveyor gradually diminishes in quantity during the time of the formation of the before-mentioned cavity. Thus it will be seen that the supply of cement to the conveyor Varies in quantity from none to that which chokes the conveyor and renders it inoperative, and it should also be said that the before mentioned irregularity of supply pro-- vents theuse 0t belt conveyors or other forms similar thereto, as the latter might be frequently broken or seriously damaged by avalanches of cement suddenly falling thereon.

Myinvenlion is intended and adapted to regulate the food of the cement or othersubstance to the conveyor, and thereby to avoid the clogging of the latter. It will also be seen that the use of any practical form of conveyor may be rendered feasible if the cement or other substance be never supplied thereto in quantity beyond the capacity thereof.

In the drawings, Figure l is a transverse vertical section of two bins and of a belt conveyor, the section beingtakon'on the lines of gateways, oneof which is shown in each bin. Afeoding device which embodies my invention is shown, in a general way, in position at said gateways. Fig. 2 is a side elevation, and Fig. 3 isa top plan view, partly in section, on a larger scale, of my invention and a portion of a belt conveyor, a portion of a bin being'shown in Fig. 3; and Fig. tis a vertical longitudinal sectionof a modification of myinvontion, a part of a single bin being also shown.

Corresponding parts in all the figures are denoted by the same reference characters.

-Referring to the drawings, 1 designates a power transmission element, herein shown as a cable, which passes around a flanged drum 2, which rotates upon a shaft 2', which is mounted in the frame of the machine, said frame being herein referred to in a general way as A. The inner end'of'the hub of the .drum 2 may be formed as a member of a clutch of any suitable form and may he slid,

by means of a lever 3", either into or out of engagement with a clutch member 3', which is fixed upon theshaft 2. A spur-pinion 3 is fixed upon the shaft 2 and meshes with a spur gear-wheel 4, which is fixed upon a rotatable shaft 5, which is journalod in boxes I) b, the hub 4. of the wheelo being engageable by the boxes I) to prevent longitudinal movement of the shaft 5 and-of members mounted thereon. Outwardly of each box ba helically-radial vane, herein termed a feedscrew 6, is mounted, one of the pair being preferably arranged in a right-hand and the other in a left-hand direction on and around the shaft 5. Cylindrical sleeves c c, which are fixed upon the frame A, respectively, surround the feed-screws 6. Latches 7 7, herein shown as four in number, are pivoted in pairs, the members thereof oppositely positioned at the outer ends of the sleeves c and are adapted to severally engage flanges (Z' d, which are formed on chutes (Z (Z, which lead from the bins B 13, respectively, and which are severally dimensionally adapted to register with the sleeves 0, respectively. A gate 6 is slidably mounted in each chute (I, one only of the former being shown. The whole device, as shown, is mounted upon a truck F, which has flanged wheels ff, which are adapted to run upon rails g g. A delivery-chute K, which, as shown, is bifurcated to pass on both sides of the portions of the frame A, to which are attached the journal-boxes 19, receives the fed material from the sleeves c and delivers it to the conveyer S. v

In the form of the device shown in Fig. 4 a single feed-screw 6 is arranged to rotate within a sleeve 0, which may register with a chute cl, which communicates with a bin B, which is suspended above the feeding device. The latter may be either mounted on a truck (not shown) or fixed in position by members attached to the frame A. It should be noted that the feed-screws 6 should be of such pitch that their surfaces will engage the fed material with sufficient friction to prevent the latter from moving through the sleeves 0 except in conformity with the rotations of the feedscrews 6.

The operation and advantages of my invention will be readily understood by those skilled in the art to which it appertains. A feeding device may be positioned as before mentioned and secured to chutes cl by means of latches 7. Power being applied to the feed-screws 6 by means of the cable 1, drum 2, pinion 3, and wheel 4, the gates c may be opened and the contents of the bins B may be fed outwardly through the chutes d and sleeves c by means of the feed-screws 6 and will fall into the chute K, down which it will gravitate to the conveyer 8, the quantity of material fed to said conveyer being regulated by the feeding device as aforesaid.

I do not desire to be understood as limiting myself to the details of construction and arrangement' as herein described and. illustrated, as it is manifest that variations and modifications may be made in the features of construction and arrangement in the adaptation of the device to various conditions of use without departing from the spirit and scope of my invention and improvements. I therefore reserve the right to all such variation and modification as properly fall within the scope of my invention and the terms of the following claims.

Having thus described my invention, I claim and desire to secure by Letters Patcut- 1. A feeding device for conveyers, and comprising a frame; a shaft rotatably'mounted thereon; a feed-screw mounted on and rotating with the shaft; a sleeve surrounding the feed-screw; a chute adapted to register with the sleeve; means for attaching the sleeve to the chute; and a delivery-chute adapted to receive material fed through the sleeve.

2. Afeeding device for conveyers, and comprising a frame; a shaft rotatably mounted thereon; a plurality of feed-screws mounted on and rotating with the shaft; and sleeves respectively surrounding the several feedscrews.

3. A feeding device for conveyers, and comprising a frame; a shaft rotatably mounted thereon; a plurality of feed-screws mounted on and rotating with the shaft; sleeves respectively surrounding the several feedscrews; and chutes respectively adapted to register with the several sleeves.

at. A feeding device for conveyors, and comprising, a frame; a shaft rotatably mounted thereon; a plurality of feed-screws mounted on and rotating with the shaft; sleeves respectively surrounding the several feedscrews; chutes respectively adapted to register with the several sleeves; and means for respectively attaching the sleeves to the several chutes.

5. Afeeding device for conveyors, and comprising a frame; a shaft rotatably mounted thereon; a plurality of feed-screws mounted on and rotating with the shaft; sleeves respectively surrounding the several feedscrews; chutes respectively adapted to register with the several sleeves; means for respectively attaching the sleeves to the several chutes; and a delivery-chute adapted to receive material fed through the sleeves.

6. A feeding device forconveyers, and comprising a frame; a shaft rotatably mounted thereon; a plurality of feed-screws mounted on and rotating with the shaft; sleeves respectively surrounding the several feedscrews; chutes respectively adapted to register with the several sleeves; means for respectively attaching sleeves to the several chutes; and a bifurcated delivery chute adapted to receive material fed through the sleeves.

7. A feeding device for conveyors, and arranged to be positioned at any one of a number of chutes, and comprising a frame; ashaft rotatably mounted thereon; a feed screw mounted on and rotating with the shaft; a sleeve surrounding the feed-screw; a vehicle .on which the device is mounted; and rails guiding said vehicle to position the device at any one of a number of chutes.

S. A feeding device for conveyors, and arranged to be positioned at any one of a number of chutes, and comprising a frame; a shaft rotatably mounted thereon; a feed screw mounted on and rotating with the shaft; a sleeve surrounding the feed-screw; a chute adapted to register with the sleeves; means for attaching the sleeve to the chute; a vehicle on which the device is mounted; and rails guiding said vehicle to position the device at any one of a number of chutes.

9. A feeding device for conveyers, and arranged to be positioned at anyone of a number of chutes, and comprisinga frame; a shaft rotatably mounted thereon; a feedscrew mounted on and rotating with the shaft; a sleeve surrounding the feed-screw; a delivery-chute adapted to receive material fed through the sleeve; a vehicle on which the device is mounted; and rails guiding said vehicle to position the device at any one of a number of chutes.

10. A feeding device for conveyers, and arranged to be positioned at any one of a number of chutes, and comprising a frame; ashaft rotatably mounted thereon; a sleeve surrounding the feed-screw; a chute adapted to register with the sleeve; means for attaching the sleeve to the chute; a delivery-chute adapted to receive material fed through the sleeve; a vehicle on which the device is mounted; and rails guiding said vehicle to position the device at any one of a number of chutes.

11. A feeding device for conveyers, and arranged to be positioned at any one of a number of chutes, and comprising a frame; a shaft rotatably mounted thereon; a plurality of feed-screws mount-ed'on and rotating with the shaft; sleeves respectively surrounding the several feed -screws; a vehicle on which the device is mounted; and rails guid ing said vehicle to at once position the device at a plurality of chutes, less than the total number of said chutes.

12. A feeding device for conveyers, and arranged to be positioned at any one of a number of chutes, and comprising a frame; a shaft rotatably mounted thereon; a plurality of feed-screws mounted on and rotating with the shaft; sleeves respectively surrounding the several feed-screws; chutes respectively adapted to register with the several sleeves; a vehicle on which the device is mounted; and rails guiding said vehicle to at once position the device at a plurality of chutes, less than the total number of said chutes.

13. A feeding device for conveyers, and arvice at a plurality of chutes, less than the total number of said chutes.

14. A feeding device for conveyers, and arranged to be positioned at any one of a number of chutes, and comprising a frame; a shaft rotatably mounted thereon; a plurality of feed-screws mounted on and rotating with the shaft; chutes respectively adapted to register with the several sleeves; means for respectively attaching the sleeves to the several chutes; a delivery-chute adapted to receive material fed through the sleeves; a vehicle on which the device is mounted; and rails guiding said vehicle to at once position the device at a plurality of chutes, less than the total number of said chutes.- I

15. A feeding device for conveyers, and arranged to be positioned at any one of a number of chutes, and comprising a frame; a shaft rotatably mounted thereon; a plurality of feed-screws mounted on and rotating with the shaft; sleeves respectively surrounding the several feed-screws; chutes respectively adapted to register with the several sleeves; means for respectively attaching sleeves to the several chutes; a bifurcated delivery-chute adapted to receive material fed through the sleeves; a vehicle on which the device is mounted; and rails guiding said vehicle to at once position the device at a plurality of chutes, less than the total number of said chutes.

In testimony whereof I have signed my name in the presence of the subscribing wit nesses.

.OARL MITTAG. Witnesses:

CHAS. H. DAVIDS,

J. O. PYBAS. 

